02 May 2026
When Should You See a Specialist for a Colonoscopy?
Deciding when to see a specialist for a colonoscopy is not always straightforward. Many bowel symptoms can be mild or intermittent, but in some cases they may indicate an underlying condition that requires further investigation.
A colonoscopy allows a specialist to examine the lining of the large bowel in detail and is one of the most effective ways to diagnose or rule out conditions such as colorectal cancer, polyps, inflammation, or other structural changes.
Common symptoms that may require a colonoscopy
You may be referred for a colonoscopy, or consider seeking specialist advice, if you are experiencing:
A persistent change in bowel habit (diarrhoea, constipation, or alternating patterns)
Blood in the stool or rectal bleeding
Unexplained abdominal pain, bloating, or discomfort
Iron deficiency anaemia without a clear cause
Ongoing fatigue linked to possible blood loss
Unintentional weight loss
While these symptoms are often caused by non-serious conditions, they should not be ignored if they persist or worsen over time.
Screening and family history
Even without symptoms, a colonoscopy may be recommended if you have an increased risk of bowel cancer. This can include:
A family history of colorectal cancer or polyps
A personal history of inflammatory bowel disease
Previous polyps requiring surveillance
In these cases, regular colonoscopy plays an important role in early detection and prevention.
When to seek specialist input sooner
Timing can make a difference. It may be appropriate to seek earlier specialist advice if:
Symptoms are new and persistent
There is visible bleeding
You are over 50 and have not had prior screening
Your symptoms are affecting your quality of life or causing concern
At Intus, referrals are reviewed by experienced specialists to determine urgency. Where appropriate, patients may be offered earlier appointments across different locations or with another available specialist to avoid unnecessary delays.
Do you need a GP referral?
You can be referred for a colonoscopy by your GP, or you may choose to self-refer to Intus.
All self-referrals are clinically assessed to ensure the most appropriate investigation is recommended. If a colonoscopy is not the appropriate first step, alternative tests or consultations will be suggested, helping you avoid unnecessary procedures.
A balanced and personalised approach
Not everyone with bowel symptoms will need a colonoscopy. The focus at Intus is on recommending the right test, at the right time, based on each patient’s individual situation.
If you are unsure whether your symptoms require further investigation, seeking early advice can provide clarity and reassurance - and where needed, support timely diagnosis and treatment.
